sudo aptitude build-dep virtuoso-opensource
[sudo] password for smz:
The following partially installed packages will be configured:
  cli-common-dev libmono-cil-dev libnunit-cil-dev libnunit2.5-cil mono-devel
No packages will be installed, upgraded, or removed.
0 packages upgraded, 0 newly installed, 0 to remove and 2 not upgraded.
Need to get 0 B of archives. After unpacking 0 B will be used.
Setting up libnunit2.5-cil (2.5.10.11092+dfsg-1) ...
* Installing 5 assemblies from libnunit2.5-cil into Mono

Unhandled Exception: System.MissingMethodException: Method not found: 'System.Reflection.PropertyInfo.op_Equality'.
  at Mono.Tools.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.MissingMethodException: Method not found: 'System.Reflection.PropertyInfo.op_Equality'.
  at Mono.Tools.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
E: installing Assembly /usr/lib/cli/nunit.core-2.5/nunit.core.dll failed
E: Installation of libnunit2.5-cil with /usr/share/cli-common/runtimes.d/mono failed
dpkg: error processing libnunit2.5-cil (--configure):
 subprocess installed post-installation script returned error exit status 29
No apport report written because MaxReports is reached already
                                                              dpkg: dependency problems prevent configuration of libnunit-cil-dev:
 libnunit-cil-dev depends on libnunit2.5-cil (= 2.5.10.11092+dfsg-1); however:
  Package libnunit2.5-cil is not configured yet.
dpkg: error processing libnunit-cil-dev (--configure):
 dependency problems - leaving unconfigured
No apport report written because MaxReports is reached already
                                                              dpkg: dependency problems prevent configuration of libmono-cil-dev:
 libmono-cil-dev depends on libnunit-cil-dev (>= 2.4); however:
  Package libnunit-cil-dev is not configured yet.
dpkg: error processing libmono-cil-dev (--configure):
 dependency problems - leaving unconfigured
No apport report written because MaxReports is reached already
                                                              dpkg: dependency problems prevent configuration of mono-devel:
 mono-devel depends on libmono-cil-dev (= 2.10.5-1); however:
  Package libmono-cil-dev is not configured yet.
dpkg: error processing mono-devel (--configure):
 dependency problems - leaving unconfigured
No apport report written because MaxReports is reached already
                                                              dpkg: dependency problems prevent configuration of cli-common-dev:
 cli-common-dev depends on mono-devel (>= 2.10.1) | strong-name-tool; however:
  Package mono-devel is not configured yet.
  Package strong-name-tool is not installed.
  Package mono-devel which provides strong-name-tool is not configured yet.
dpkg: error processing cli-common-dev (--configure):
 dependency problems - leaving unconfigured
No apport report written because MaxReports is reached already
                                                              Errors were encountered while processing:
 libnunit2.5-cil
 libnunit-cil-dev
 libmono-cil-dev
 mono-devel
 cli-common-dev
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install.  Trying to recover:
Setting up libnunit2.5-cil (2.5.10.11092+dfsg-1) ...
* Installing 5 assemblies from libnunit2.5-cil into Mono

Unhandled Exception: System.MissingMethodException: Method not found: 'System.Reflection.PropertyInfo.op_Equality'.
  at Mono.Tools.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.MissingMethodException: Method not found: 'System.Reflection.PropertyInfo.op_Equality'.
  at Mono.Tools.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
E: installing Assembly /usr/lib/cli/nunit.core-2.5/nunit.core.dll failed
E: Installation of libnunit2.5-cil with /usr/share/cli-common/runtimes.d/mono failed
dpkg: error processing libnunit2.5-cil (--configure):
 subprocess installed post-installation script returned error exit status 29
dpkg: dependency problems prevent configuration of libnunit-cil-dev:
 libnunit-cil-dev depends on libnunit2.5-cil (= 2.5.10.11092+dfsg-1); however:
  Package libnunit2.5-cil is not configured yet.
dpkg: error processing libnunit-cil-dev (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of libmono-cil-dev:
 libmono-cil-dev depends on libnunit-cil-dev (>= 2.4); however:
  Package libnunit-cil-dev is not configured yet.
dpkg: error processing libmono-cil-dev (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of mono-devel:
 mono-devel depends on libmono-cil-dev (= 2.10.5-1); however:
  Package libmono-cil-dev is not configured yet.
dpkg: error processing mono-devel (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of cli-common-dev:
 cli-common-dev depends on mono-devel (>= 2.10.1) | strong-name-tool; however:
  Package mono-devel is not configured yet.
  Package strong-name-tool is not installed.
  Package mono-devel which provides strong-name-tool is not configured yet.
dpkg: error processing cli-common-dev (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 libnunit2.5-cil
 libnunit-cil-dev
 libmono-cil-dev
 mono-devel
 cli-common-dev